fix(documentation): fixed bug wiht Tooltip

Author: Alexander Janet

styleguide/setup.js

@@ -6,6 +6,7 @@ import Output from '../src/Output';
 import Section from '../src/Section';
 import TetherContent from '../src/TetherContent';
 import Dropdown from '../src/Dropdown';
+import Tooltip from '../src/Tooltip';
 
 global.BootstrapProvider = BootstrapProvider;
 global.Col = Col;
@@ -15,3 +16,4 @@ global.Output = Output;
 global.Section = Section;
 global.TetherContent = TetherContent;
 global.Dropdown = Dropdown;
+global.Tooltip = Tooltip;